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You can fit more work around the triangle posts as the have an angle edge.Square post take up more room. Since I load on average 35-40 shelves per fire this little bit adds up. as it 3 posts per shelve. Bowl rims can get closer to stilts as well as all other forms. The tri posts (this are the larger 1 1/2 inch ones) not the small hobby kiln ones .Loading is an art in itself and is not spoken about much.

I own lots of posts(square round tri whatever) and over time they compress meaning they are no longer what they started out.

Thats why I am ordering more.

At cone 11 with a 5 foot vertical load on them and 25-30 glaze fires a year after 20-30 years the post are shorter and I get feed up mixing and matching posts to keep it all flat.

I coat the ends with wash as well.

I have 4 racks racks of post one at each kiln

This one next to car kiln has various size cubicles that are made for each size from small to longs.

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aaah Mark. thanks for the lengthy explanation. it all makes sense now. i have been allowed to help load the kiln. and before i put the posts in i have to size them and make sure they are the right height. i wondered why they shouldnt be. but the lab tech was focused on organizing loading the kiln so i didnt want to break her concentration.

triangle is space consideration. wow. woudlnt even have thought of that. our school has all kinds too but mostly triangular ones.

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I have gotten so good at mixing things: perhaps I should try some lithium carbonate based analgesic. Remember, you have to test.test.test....Thought 2: place an ad at your local community college for a "day with a production potter." Leave the details out until the class arrives.